Genus OPHIOCERAS
Kingdom / Phylum . . . . . . . . . Class / Subclass / Infraclass Division / Superorder / Order Suborder / Infraorder . . . . . . Superfamily / Family . . . . . . . Subfamily / Genus . . . . . . . . .	Animalia / Mollusca Cephalopoda / n.a. / n.a. n.a. / n.a. / Tarphycerida n.a. / n.a. n.a. / Ophidoceratidae n.a. / Ophioceras
Age: Distribution:	Late Silurian North America, Europe
Depicted on: Czech Republic, 1999 (31 K., O. simplex) Sweden, 2011 (40 K., O. simplex)